Help! Grade boundaries dilemma!

Hi guys so I really need a C overall in my core as a minimum grade. I'm re doing with for the second time the first time I got a D, 2 Cs and a D and my CAT was a B! Last year all the I did foundation this year I did higher in b1 n c1. B1 was okay not too bad or good but c1 I flopped! My mind went blank and I didn't answer EITHER of the 6 markers well. I'm so worried gurpys what do u think are the grade boundaries I really need a C this year or I won't be able to the course I want. Pls help! Ps p1 foundation next week Wednesday!